import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'             the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

const getMenuRouter = (menu, isTop) => {
  let menuRouter
  if (isTop && menu.menuType !== 2) {
    menuRouter = {
      name: menu.menuName,
      meta: {
        title: menu.menuName
      },
      component: Layout
    }
    if (menu.menuUrl === '/') {
      menuRouter.redirect = '/dashboard'
    }
  } else if (menu.menuType === 3) { // 按钮，或者是权限点不需要生成路由
    console.log('类型，权限')
  } else {
    const menuPath = menu.menuPath
    menuRouter = {
      name: menu.menuName,
      meta: {
        title: menu.menuName
      },
      // component: () => import(`@/views/${menuPath}`)
      component: (resolve) => require([`@/views/${menuPath}`], resolve)

    }
  }
  if (menu.menuIcon) {
    menuRouter.meta.icon = menu.menuIcon
  }
  if (menu.children && menu.children.length > 0) {
    menuRouter.children = []
    for (const menu1 of menu.children) {
      if (menu1.menuType === 3) { // 按钮，或者是权限点不需要生成路由
        console.log('类型，权限，================')
      } else {
        menuRouter.children.push(getMenuRouter(menu1))
      }
    }
  }
  // 如果这个菜单不是目录不是菜单 ，那么应该隐藏
  if (menu.menuType === 2) {
    menuRouter.hidden = true
  }
  if (menu.menuType !== 3) {
    menuRouter.path = menu.menuUrl
  }
  return menuRouter
}

const createNewRouter = (newRouter) => new Router({
  // mode: 'history', // require service support
  scrollBehavior: () => ({ y: 0 }),
  routes: newRouter
})

const createRouter = () => new Router({
  // mode: 'history', // require service support
  scrollBehavior: () => ({ y: 0 }),
  routes: []
})

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter(menuList) {
  if (menuList) {
    const newMenu = []
    newMenu.push({
      path: '/',
      component: Layout,
      redirect: '/dashboard',
      children: [{
        path: 'dashboard',
        name: 'Dashboard',
        // component: () => import('@/views/dashboard/index'),
        component: (resolve) => require(['@/views/dashboard/index'], resolve),
        meta: { title: 'Dashboard', icon: 'dashboard' }
      }]
    })
    for (const menu of menuList) {
      newMenu.push(getMenuRouter(menu, true))
    }
    const newAsyncRouter = createNewRouter(newMenu)
    router.matcher = newAsyncRouter.matcher
    // routes没有自动更新
    router.options.routes = newAsyncRouter.options.routes
    // router.addRoutes(newMenu)
  } else {
    const newRouter = createRouter()
    router.matcher = newRouter.matcher // reset router
  }
}

export default router
